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1 /* |
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2 * Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Implements IPv4 bearer |
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15 * |
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16 */ |
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17 |
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18 /* |
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19 * %version: 12 % |
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20 */ |
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21 |
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22 #include <in_sock.h> // Header is retained, but in_sock.h is modified for ipv6 |
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23 #include <in_pkt.h> |
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24 #include <in6_if.h> |
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25 #include <nifvar.h> |
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26 #include <comms-infras/connectionsettings.h> |
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27 #include "CLanIp4Bearer.h" |
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28 #include "arp_hdr.h" |
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29 #include <commdb.h> |
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30 #include <cdblen.h> |
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31 #include "WlanProto.h" |
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32 #include <comms-infras/es_protbinder.h> |
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33 #include "WlanProvision.h" |
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34 |
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35 // From Wlan |
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36 #include "am_debug.h" |
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37 #include "rwlmserver.h" |
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38 |
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39 // Avoiding a warning in armv5 urel |
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40 #ifdef _DEBUG |
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41 _LIT(KCLanIp4BearerName,"EthWlan4"); |
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42 #endif /* _DEBUG */ |
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43 |
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44 using namespace ESock; |
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45 |
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46 /** |
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47 Required ConstructL() method. Performs the following: |
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48 " Sets a unique name for this binder instance in the iIfName field - "wlan[0x%x]" where "%x" |
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49 is the hexadecimal address of the "this" object. |
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50 " Reads the IP Interface Settings using ReadIPInterfaceSettingsL(). |
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51 */ |
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52 void CLanIp4Bearer::ConstructL() |
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53 { |
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54 DEBUG("CLanIp4Bearer::ConstructL()"); |
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55 |
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56 iIfName.Format(_L("wlan[0x%08x]"), this); |
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57 iBroadcastConfigured = EFalse; |
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58 iArpMsgNext = EFalse; |
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59 // ReadCommDbLanSettingsL() moved from here to point when provisioning information received |
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60 |
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61 } |
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62 |
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63 TInt CLanIp4Bearer::Control(TUint aLevel, TUint aName, TDes8& aOption) |
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64 { |
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65 DEBUG("CLanIp4Bearer::Control()"); |
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66 |
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67 if ((aLevel==KCOLInterface) || (aLevel==KSOLInterface)) |
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68 { |
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69 switch (aName) |
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70 { |
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71 case KSoIfHardwareAddr: |
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72 { |
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73 typedef TPckgBuf<TSoIfHardwareAddr> THwAddr; |
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74 THwAddr& theHwAddrRef = static_cast<THwAddr&>(aOption); |
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75 theHwAddrRef().iHardwareAddr.SetFamily(1); |
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76 theHwAddrRef().iHardwareAddr.SetPort(KArpHarwareType_ETHERNET); |
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77 theHwAddrRef().iHardwareAddr.SetLength(sizeof(SSockAddr)); |
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78 theHwAddrRef().iHardwareAddr.Append(Link()->MacAddress()); |
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79 return KErrNone; |
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80 } |
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81 default: |
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82 break; |
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83 } |
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84 } |
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85 |
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86 else if (aLevel==KSolInetIp) |
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87 { |
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88 switch (aName) |
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89 { |
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90 case KSoIp6LeaveGroup: |
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91 case KSoIp6JoinGroup: |
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92 { |
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93 |
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94 // Convert multicast IPv4 address to multicast MAC address |
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95 TIp6Mreq& opt = *(TIp6Mreq*)aOption.Ptr(); |
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96 TUint8* tmp = opt.iAddr.u.iAddr8; |
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97 TMacAddress mac; |
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98 mac.iMacAddress[0] = 0x01; |
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99 mac.iMacAddress[1] = 0x00; |
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100 mac.iMacAddress[2] = 0x5E; |
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101 mac.iMacAddress[3] = tmp[13]; |
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102 mac.iMacAddress[3] &= 0x7F; // Most significant bit is set zero |
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103 mac.iMacAddress[4] = tmp[14]; |
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104 mac.iMacAddress[5] = tmp[15]; |
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105 |
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106 TIp6Addr addr6 = opt.iAddr; |
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107 TInetAddr addr(addr6, 0); |
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108 TBuf<39> aa; |
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109 addr.Output(aa); |
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110 |
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111 if(aName == KSoIp6JoinGroup) |
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112 DEBUG1("CLanIp4Bearer::Control() - joining multicast address:%S", &aa); |
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113 else |
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114 DEBUG1("CLanIp4Bearer::Control() - leaving multicast address:%S", &aa); |
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115 |
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116 TInt ret = KErrNone; |
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117 RWLMServer wlmServer; |
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118 ret = wlmServer.Connect(); |
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119 if( ret ) |
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120 { |
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121 DEBUG1("CLanIp4Bearer::Control()- ERROR connecting RWlmServer: %d", ret); |
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122 return ret; |
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123 } |
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124 else |
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125 { |
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126 ret = wlmServer.ConfigureMulticast( aName, mac ); |
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127 wlmServer.Close(); |
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128 return KErrNone; |
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129 } |
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130 } |
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131 default: |
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132 break; |
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133 } |
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134 } |
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135 |
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136 return KErrNotSupported; |
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137 } |
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138 |
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139 // ----------------------------------------------------------------------------- |
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140 // CLanIp4Bearer::Send |
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141 // ----------------------------------------------------------------------------- |
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142 // |
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143 MLowerDataSender::TSendResult CLanIp4Bearer::Send(RMBufChain& aPdu) |
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144 { |
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145 DEBUG("CLanIp4Bearer::Send()"); |
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146 // Call down from the Protocol |
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147 // Real Protocol data is in the second MBuf of the RMBufChain |
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148 |
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149 RMBufPktInfo* info = RMBufPacket::PeekInfoInChain(aPdu); |
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150 TUint32 family = info->iDstAddr.Family(); |
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151 __ASSERT_DEBUG(family!=KAfInet6, User::Panic(KCLanIp4BearerName, 0)); |
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152 |
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153 TBuf8<KMACByteLength> destAddr; |
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154 const TUint8 etherBroadcastAddr[KMACByteLength] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; |
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155 |
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156 if(family == KAfInet) |
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157 { |
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158 // Only broadcast and multicast packets come here with address family KAfInet |
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159 TInetAddr dest(info->iDstAddr); |
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160 if( dest.IsMulticast() ) |
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161 { |
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162 // multicast |
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163 const TUint8 IpV4MulticastPrefix[KMACByteLength / 2] = {0x01, 0x00, 0x5e}; |
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164 destAddr.Copy(IpV4MulticastPrefix, KMACByteLength / 2); |
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165 |
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166 TUint32 mCastAdrrEnd = dest.Address() & 0x007fffff; |
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167 BigEndian::Put32(reinterpret_cast<TUint8*>(&mCastAdrrEnd), mCastAdrrEnd); |
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168 destAddr.Append(reinterpret_cast<TUint8*>(&mCastAdrrEnd) + 1, KMACByteLength / 2); |
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169 } |
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170 else |
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171 { |
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172 // broadcast |
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173 destAddr.Copy(etherBroadcastAddr, KMACByteLength); |
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174 } |
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175 } |
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176 else if(family == 1) |
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177 { |
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178 // Address family == 1, ethernet address is found from info |
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179 destAddr.Copy(info->iDstAddr.Mid(sizeof(SSockAddr), KMACByteLength)); |
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180 } |
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181 else |
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182 { |
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183 DEBUG1( "CLanIp4Bearer::Send() - unsupported family type: %u", |
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184 family ); |
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185 |
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186 aPdu.Free(); |
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187 return static_cast<MLowerDataSender::TSendResult>(1); |
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188 } |
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189 |
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190 TInt ret = Link()->FrameSend(aPdu, destAddr, (TUint)info->iProtocol == KProtocolArp ? KArpFrameType : KIPFrameType); |
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191 |
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192 return static_cast<MLowerDataSender::TSendResult>(ret); |
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193 } |
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194 |
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195 // ----------------------------------------------------------------------------- |
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196 // CLanIp4Bearer::StartSending |
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197 // ----------------------------------------------------------------------------- |
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198 // |
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199 void CLanIp4Bearer::StartSending(CProtocolBase* aProtocol) |
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200 { |
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201 DEBUG("CLanIp4Bearer::StartSending()"); |
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202 |
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203 CLanxBearer::StartSending(aProtocol); |
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204 |
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205 if (!iBroadcastConfigured) |
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206 { |
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207 TMacAddress broadcastmac; |
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208 broadcastmac.iMacAddress[0] = 0xFF; |
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209 broadcastmac.iMacAddress[1] = 0xFF; |
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210 broadcastmac.iMacAddress[2] = 0xFF; |
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211 broadcastmac.iMacAddress[3] = 0xFF; |
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212 broadcastmac.iMacAddress[4] = 0xFF; |
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213 broadcastmac.iMacAddress[5] = 0xFF; |
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214 |
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215 RWLMServer wlmServer; |
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216 if (wlmServer.Connect() != KErrNone) |
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217 { |
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218 DEBUG("CLanIp4Bearer::StartSending(), ERROR connecting to wlan engine"); |
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219 } |
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220 else |
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221 { |
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222 DEBUG("CLanIp4Bearer::StartSending(), Configuring umac to receive Broadcast frames"); |
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223 if( wlmServer.ConfigureMulticast( KSoIp6JoinGroup, broadcastmac ) ) |
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224 { |
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225 DEBUG("CLanIp4Bearer::StartSending(),ERROR calling ConfigureMulticast"); |
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226 } |
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227 wlmServer.Close(); |
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228 iBroadcastConfigured = ETrue; |
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229 } |
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230 } |
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231 } |
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232 |
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233 // ----------------------------------------------------------------------------- |
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234 // CLanIp4Bearer::WantsProtocol |
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235 // ----------------------------------------------------------------------------- |
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236 // |
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237 TBool CLanIp4Bearer::WantsProtocol(TUint16 aProtocolCode,const TUint8* aPayload) |
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238 { |
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239 DEBUG("CLanIp4Bearer::WantsProtocol()"); |
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240 |
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241 iArpMsgNext = (aProtocolCode == KArpFrameType); |
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242 return ((aProtocolCode==KIPProtocol && (aPayload[0]>>4)==KIP4Protocol) || (aProtocolCode==KArpFrameType)) ? ETrue:EFalse; |
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243 } |
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244 |
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245 // ----------------------------------------------------------------------------- |
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246 // CLanIp4Bearer::Process |
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247 // ----------------------------------------------------------------------------- |
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248 // |
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249 void CLanIp4Bearer::Process(RMBufChain& aPdu) |
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250 { |
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251 DEBUG("CLanIp4Bearer::Process()"); |
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252 |
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253 if (iUpperReceiver) |
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254 { |
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255 RMBufPktInfo* info = RMBufPacket::PeekInfoInChain(aPdu); |
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256 if (info) |
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257 { |
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258 info->iProtocol = iArpMsgNext ? KProtocolArp : KProtocolInetIp; |
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259 } |
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260 iUpperReceiver->Process(aPdu); |
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261 } |
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262 else |
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263 { |
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264 aPdu.Free(); |
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265 } |
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266 } |
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267 |
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268 // ----------------------------------------------------------------------------- |
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269 // CLanIp4Bearer::ReadCommDbLanSettingsL |
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270 // ----------------------------------------------------------------------------- |
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271 // |
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272 void CLanIp4Bearer::ReadCommDbLanSettingsL() |
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273 { |
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274 DEBUG("CLanIp4Bearer::ReadCommDbLanSettingsL()"); |
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275 |
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276 ASSERT(iProvision); |
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277 |
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278 iLocalAddr = iProvision->LocalAddr(); |
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279 iNetMask = iProvision->NetMask(); |
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280 iDefGateway = iProvision->DefGateway(); |
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281 iPrimaryDns = iProvision->PrimaryDns(); |
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282 iSecondaryDns = iProvision->SecondaryDns(); |
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283 } |
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284 |
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285 // ----------------------------------------------------------------------------- |
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286 // CLanIp4Bearer::GetConfig |
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287 // ----------------------------------------------------------------------------- |
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288 // |
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289 TInt CLanIp4Bearer::GetConfig(TBinderConfig& aConfig) |
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290 { |
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291 DEBUG("CLanIp4Bearer::GetConfig()"); |
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292 |
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293 TBinderConfig4& config = static_cast<TBinderConfig4&>(aConfig); |
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294 |
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295 config.iFamily = KAfInet; /* KAfInet / KAfInet6 - selects TBinderConfig4/6 */ |
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296 |
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297 config.iInfo.iFeatures = KIfCanBroadcast | KIfCanMulticast | KIfNeedsND; /* Feature flags */ |
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298 config.iInfo.iMtu = Link()->Mtu(); /* Maximum transmission unit. */ |
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299 config.iInfo.iRMtu = Link()->Mtu(); /* Maximum transmission unit for receiving. */ |
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300 config.iInfo.iSpeedMetric = Link()->SpeedMetric(); /* approximation of the interface speed in Kbps. */ |
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301 |
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302 config.iAddress.SetAddress(iLocalAddr); /* Interface IP address. */ |
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303 config.iNetMask.SetAddress(iNetMask); /* IP netmask. */ |
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304 config.iBrdAddr.SetAddress(iBroadcastAddr); /* IP broadcast address. */ |
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305 config.iDefGate.SetAddress(iDefGateway); /* IP default gateway or peer address (if known). */ |
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306 config.iNameSer1.SetAddress(iPrimaryDns); /* IP primary name server (if any). */ |
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307 config.iNameSer2.SetAddress(iSecondaryDns); /* IP secondary name server (if any). */ |
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308 |
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309 return KErrNone; |
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310 } |
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311 |
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312 // ----------------------------------------------------------------------------- |
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313 // CLanIp4Bearer::ProtocolName |
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314 // ----------------------------------------------------------------------------- |
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315 // |
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316 const TDesC8& CLanIp4Bearer::ProtocolName() const |
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317 { |
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318 DEBUG("CLanIp4Bearer::ProtocolName()"); |
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319 |
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320 _LIT8(KProtocolName, "ip"); |
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321 return KProtocolName(); |
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322 } |
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323 |
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324 // ----------------------------------------------------------------------------- |
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325 // CLanIp4Bearer::SetProvisionL |
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326 // ----------------------------------------------------------------------------- |
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327 // |
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328 void CLanIp4Bearer::SetProvisionL(const Meta::SMetaData* aProvision) |
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329 { |
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330 DEBUG("CLanIp4Bearer::SetProvisionL()"); |
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331 |
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332 if (iProvision == NULL) |
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333 { |
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334 iProvision = static_cast<const TLanIp4Provision*>(aProvision); |
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335 ReadCommDbLanSettingsL(); |
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336 } |
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337 } |
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338 |